辽河坳陷古近系构造-沉积演化特征
网络出版日期: 2008-06-15
Structural-sedimentary evolution char acter istics of Paleogene in Liaohe Depr ession
李传亮 . 辽河坳陷古近系构造-沉积演化特征[J]. 岩性油气藏, 2008 , 20(2) : 60 -65 . DOI: 10.3969/j.issn.1673-8926.2008.02.010
Liaohe Depression is a Cenozoic oil-bearing depression which overlaps Mesozoic basin. The rift characteristics are very obvious at the early stage of Paleogene, but in the later period, the depression characteristics are marked. The evolution of Liaohe Depression could be divided into three periods, including Sha 4 and Sha 3 rift period, Sha 1+2 rift-depression period and Dongying depression period. Fan delta and sublacustrine fan facies developed during rift period of Sha 4 and Sha3; fan delta facies and alluvial facies chiefly developed during rift-depression period of Sha 1+2; delta facies and flood plain facies mainly developed during the depression period of Dongying stage.
Key words: rock; petroleummigration; primary migration; secondary migration; capillary pressure
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